Arch-supporting insole



H. C. EGERTON. ARCH SUPPORTING INSOLE. APPLICATION FILED MAR 31. 1919.

Patented Mar. 8, 1921.

port the arch of th UNITED STATES PATENT OFFICE. HENRY C. EGER -g BIDGEWOOD, NEW JERSEY.

ARCH-SUPPORTING INBOLE.

To all whom it may cmwcm:

Be it known that I, HENRY G. EGERTON, a citizen of the United States, and resident of idgewood, county of Bergen, State of New Jersey, have made a certain new and useful Invention Relating to Arch-Supporting Insoles, of which the following is a specification, taken in connection with the accompanying drawing.

This invention relates especially to stiffening insoles or arch sup orts which may be separately inserted in s oes and secured in position therein, if desired, or may be othersupe wearers foot. These insoles may comprise fabric or other fibrous material carrying or incorporated with phenolic condensation cementing material, such as bakelite, condensite or re manol varnish compositions of canvas or other woven or and strengthens them.

In t e accompanying drawing showing m a somewhat diagrammatic way various illustrative embodiments of this invention, Figure 1 is, a top view showing one form V of arch supporting insole.

Fig. 2 diagrammatic longitudinal section thereof showing the different layers or elements in separated position;

ig. 3 is a corresponding side view of the finished insole, parts being shown in section.

Fig. 4 is a side view showing another embodiment.

Fig. 5 is a top form; and

Fig. 6.is a side view thereof.

en canvas or other fabric or stron fibrous material contains thirty to sixty per cent. more or less of thorough rated cured bakelite varnish or erally similar phenolic condensation cementing material, it has a eat deal of elastic or resilient strength and is desirable for use in arch supporting insoles where it can advantageously exert t yielding restoring acview showing still another Specification 01 Letters Patent.

used

g therem which under Patented Mar. 8, 1921.

Application filed larch 81, 1919. Serial No. 286,249.

tion on the arch of the foot. Such arch supporting insoles may advantageously have their upper sup As shown 1n Fig. 2

be woven cotton fabric h as cambric or sheeting of relatively texture which has preferably been quite thoroughly impregnated with dried bakelite varnish compositions so that it contamsisome fifty er cent. or so by weight of such material. ne or more layers of hea fabric 5 h fabric may beprepared and as described in the E 1,282,399 of October 22, 1918 which broadly elements.

cements may be sufficiently absorbed thereby to secure the completed article within the shoe in connection with such nailing or other securing means as may be desired. For this purpose a layer of untreated cotton fabric may used on the bottom of the article and sufiiciently secured to the other elements by the ph densation cementing material contained the molding heat is forced out to become incorporated with the contacting surfacaof this lower fabric layer so that it is eiiecti'yely secured to the artia relatively weak that it we on readily conforms:

gerton Patent,

to the shape of the inside of the shoe. After trimming down the insole to the extent necessary the edge may further be weakened to l greater e by. rubbing over it a tool with sufficient weakened edgewhich still further minimizes L of in ury to the other parts of the shoe and the somewhat weakened edge portion 12 may, if desired, be formed at the heel portion of the insole.

The shank portion of the insole may advantageously be considerably reinforced and strengthened by incorporating therein ad ditional layers of fabric, such as canvas car-, rying or incorporated with such phenolic condensation cementing material, or strong more or less absorbent grades of impregnated paper or cotton batting which ma be so arranged or formed that the cotton fi ers are to a greater extent arranged longitudinally of theinsole and somewhat tapered down at the front and rear portions so as to be most effective and also merge gradually into the other elements at the front and bac portions of this shank stiffener. In some cases also special fabric may be used in this and other arts of thestifl'ening insole in which the t reads running longitudinally of the insole are of relatively heavier straight character so that the longitudinal strength of the finished .article is correspondingly increased. I As indicated in Fi 2 a number of layers of fabric7,8,9 may be used at this portion of the insole and in some cases also spring steel strips orother resilient metal stiffeners 10 may be used preferably so arranged or formed that the fabric maybe securely united through or aroun them so that splitting is prevented. The different layers after being suitably arranged and' if desired temporarily secured together in any desired way may be subtlie possibility N jected to a heat curing treatment under high sions or portions pressure, so that they are securely united and the u' per surface at least accurately formed an finished so as to conform to the particular contour desired.

In some cases it is quite desirable to have a one-piece arch supporting insole of this character exert a resilient and yielding restoring action on the arch of t e foot and Fig. 4 shows such an arrangement in which the shank or arch supporting portion 15 is of such a resilient vielding material as to be somewhat flattened or depressed by the weight of the foot so that under such pressure it may assume the dotted position while normally it tends to spring upward into the full line position shown. t is advantageous to have such an arch supporting "inso e formed with sufficiently sti front exten- I 14 so as to stiffen the shoe sole at this point at least beneath the ball of the foot which makes it quite advantageous for use with light or flexible rubber. soled formed almost entirely .terial is present in the upper supporting surcarrying cure shoes of various grades and a similar heel stiffening portion 16 is also sometimes advantageous. It is also desirable to have this arch supporting insole and sole stiffener formed with relatively yieldable' weak edges 11 which may be of the character previously described. uch an insole may be effectively made in the general way above described, a greater degree of resilient elasticity and toughness being secured by employin greater proportion of cotton or similar abric as compared Withthe proportion of paper used which while somewhat stronger has less toughness and resistance to fractureon bending. In some cases the insole may of canvas, cotton batting or other similar fibrous material containing only a relatively small proportion of paper ulp which for such uses should be empib strains are least.

yed adjacent the central-8 portion of the insole where the bending Figs. 5 and 6 show another form of arch supporting the shank or arch supporting portion 18 ing in this case also of relatively thick heavy and stiff material, while the front portion 17 is of thinner and lighter construction, a number of layers of fabric such as paper, clot or other fibrous material carrying or impregnated with large proportions of cured phenolic condensation giving good results for such purposes. This construction has the decided advantage that a one-piece unitary has a high degree ofresilient stiffness and strength as compared to its weight. Also when forty or fifty er cent. or more of such cured phenolic con ensation cementingmainsole of relatively small area,

face of the insole, it is practically impervious and absorption cannot therefore take place to any appreciable or objectionable extent under service conditions.

This invention has nection with a number of illustrative emcementing material,

article is made which been disclosed in con- 11' bodiments, forms, proportions, elements,-

parts, shapes, ditions and methods of preparation, production and use, sure the invention is not of course to limited, since what 'is claimed as new and what is desired to be securi'd byLetters Patent is set forth in the a'ppfefn'ded" claims:

materials, compositions, coni to the details of which disclo- 11 1. The unitary ,arcli'supportiiig insole and 11 sole stifienerhavii ga siibstaiit all impervious'smooth uppersup}3; rtiiiglsi ace comrising close textured woyen fab'iic'carrying a lar proporition of ic' iiredl pheriolicj condensation cemen bottoifica-j iet ener having an absorbent fabl'ki and having a lurality of its arch suppo .tively thin and ing shank portion, the front edge of said stiffener being relatively thin and yieldable.

2. The unitary arch supporting insole and sole stiffener having a substantially impervious smooth upper supporting surface comprising a large proportion of cured phenolic condensation cementing material, said stiff ener having a plurality of layers of paper carrying cured phenolic condensation cementing material adjacent its arch support ing shank portion, the front edge of said stiffener being relatively thin and yieldable.

3. The unitary arch supporting insole and sole stiffener comprising fibrous material having a substantially impervious smooth upper supporting surface comprising cured phenolic condensation cementing material, the front edge of said stiffener being relayieldable.

supporting surface comprising cured phenolic condensation cementing material, the front edge of said stiffener being relatively yieldable.

5. The unitary arch supporting insole and sole stiffener having an absorbent fabric bottom capable of being cemented to a shoe element and having a plurality of layers of paper carrying cured phenolic condensation cementing material adjacent its arch supporting shank portion.

6. The unitary arch supporting insole having a plurality terial carrying cured phenolic condensation of layers of fibrous macementing material adjacent its arch supporting shank portion.

he unitary arch supporting insole comprising a plurality of layers of Woven and paper fabric permanently united and strengthened by incorporated cured phenolic condensation cementing material and having a relatively yielding edge portion.

8. The unitary arch supporting insole comprising a plurality of layers of paper permanently united and strengthened by incorporated cured phenolic condensation cementing material.

9. The insertible unitary arch supporting insole and sole stiffener comprising fibrous material united and strengthened by incorporated cured phenolic condensation cementing material and having a resiliently yielding shank portion.

10. The insertable arch supporting insole and sole stiffener comprising fibrous mate- I rial united and strengthened by incorporated cured phenolic ing material.

11. The unitary arch supporting insole and sole stiffener comprising a plurality of layers of fabric permanently united and strengthened by incorporated cured phenolic condensation cementing material and having a resiliently yielding shank portion.

he unitary arch supporting insole and sole stiffener comprising fabric strengthened by incorporated cured phenolic condensation cementing material.

HENRY C. EGERT ON condensation cement- 

